/*
 * jQuery Form Plugin version: 2.36 (07-NOV-2009) @requires jQuery v1.2.6 or
 * later
 * 
 * Examples and documentation at: http://malsup.com/jquery/form/ Dual licensed
 * under the MIT and GPL licenses:
 * http://www.opensource.org/licenses/mit-license.php
 * http://www.gnu.org/licenses/gpl.html
 */
;
(function(jQuery) {

    /*
     * Usage Note: ----------- Do not use both ajaxSubmit and ajaxForm on the
     * same form. These functions are intended to be exclusive. Use ajaxSubmit
     * if you want to bind your own submit handler to the form. For example,
     * 
     * jQuery(document).ready(function() { jQuery('#myForm').bind('submit',
     * function() { jQuery(this).ajaxSubmit({ target: '#output' }); return
     * false; // <-- important! }); });
     * 
     * Use ajaxForm when you want the plugin to manage all the event binding for
     * you. For example,
     * 
     * jQuery(document).ready(function() { jQuery('#myForm').ajaxForm({ target:
     * '#output' }); });
     * 
     * When using ajaxForm, the ajaxSubmit function will be invoked for you at
     * the appropriate time.
     */

    /**
     * ajaxSubmit() provides a mechanism for immediately submitting an HTML form
     * using AJAX.
     */
    jQuery.fn.ajaxSubmit = function(options) {
        // fast fail if nothing selected (http://dev.jquery.com/ticket/2752)
        if (!this.length) {
            log('ajaxSubmit: skipping submit process - no element selected');
            return this;
        }

        if (typeof options == 'function')
            options = {
                success : options
            };

        var url = jQuery.trim(this.attr('action'));
        if (url) {
            // clean url (don't include hash vaue)
            url = (url.match(/^([^#]+)/) || [])[1];
        }
        url = url || window.location.href || '';

        options = jQuery.extend({
                    url : url,
                    type : this.attr('method') || 'GET',
                    iframeSrc : /^https/i.test(window.location.href || '')
                            ? 'javascript:false'
                            : 'about:blank'
                }, options || {});

        // hook for manipulating the form data before it is extracted;
        // convenient for use with rich editors like tinyMCE or FCKEditor
        var veto = {};
        this.trigger('form-pre-serialize', [this, options, veto]);
        if (veto.veto) {
            log('ajaxSubmit: submit vetoed via form-pre-serialize trigger');
            return this;
        }

        // provide opportunity to alter form data before it is serialized
        if (options.beforeSerialize
                && options.beforeSerialize(this, options) === false) {
            log('ajaxSubmit: submit aborted via beforeSerialize callback');
            return this;
        }

        var a = this.formToArray(options.semantic);
        if (options.data) {
            options.extraData = options.data;
            for (var n in options.data) {
                if (options.data[n] instanceof Array) {
                    for (var k in options.data[n])
                        a.push({
                                    name : n,
                                    value : options.data[n][k]
                                });
                } else
                    a.push({
                                name : n,
                                value : options.data[n]
                            });
            }
        }

        // give pre-submit callback an opportunity to abort the submit
        if (options.beforeSubmit
                && options.beforeSubmit(a, this, options) === false) {
            log('ajaxSubmit: submit aborted via beforeSubmit callback');
            return this;
        }

        // fire vetoable 'validate' event
        this.trigger('form-submit-validate', [a, this, options, veto]);
        if (veto.veto) {
            log('ajaxSubmit: submit vetoed via form-submit-validate trigger');
            return this;
        }

        var q = jQuery.param(a);

        if (options.type.toUpperCase() == 'GET') {
            options.url += (options.url.indexOf('?') >= 0 ? '&' : '?') + q;
            options.data = null; // data is null for 'get'
        } else
            options.data = q; // data is the query string for 'post'

        var jQueryform = this, callbacks = [];
        if (options.resetForm)
            callbacks.push(function() {
                        jQueryform.resetForm();
                    });
        if (options.clearForm)
            callbacks.push(function() {
                        jQueryform.clearForm();
                    });

        // perform a load on the target only if dataType is not provided
        if (!options.dataType && options.target) {
            var oldSuccess = options.success || function() {
            };
            callbacks.push(function(data) {
                        jQuery(options.target).html(data).each(oldSuccess,
                                arguments);
                    });
        } else if (options.success)
            callbacks.push(options.success);

        options.success = function(data, status) {
            for (var i = 0, max = callbacks.length; i < max; i++)
                callbacks[i].apply(options, [data, status, jQueryform]);
        };

        // are there files to upload?
        var files = jQuery('input:file', this).fieldValue();
        var found = false;
        for (var j = 0; j < files.length; j++)
            if (files[j])
                found = true;

        var multipart = false;
        // var mp = 'multipart/form-data';
        // multipart = (jQueryform.attr('enctype') == mp ||
        // jQueryform.attr('encoding') == mp);

        // options.iframe allows user to force iframe mode
        // 06-NOV-09: now defaulting to iframe mode if file input is detected
        if ((files.length && options.iframe !== false) || options.iframe
                || found || multipart) {
            // hack to fix Safari hang (thanks to Tim Molendijk for this)
            // see:
            // http://groups.google.com/group/jquery-dev/browse_thread/thread/36395b7ab510dd5d
            if (options.closeKeepAlive)
                jQuery.get(options.closeKeepAlive, fileUpload);
            else
                fileUpload();
        } else
            jQuery.ajax(options);

        // fire 'notify' event
        this.trigger('form-submit-notify', [this, options]);
        return this;

        // private function for handling file uploads (hat tip to YAHOO!)
        function fileUpload() {
            var form = jQueryform[0];

            if (jQuery(':input[name=submit]', form).length) {
                alert('Error: Form elements must not be named "submit".');
                return;
            }

            var opts = jQuery.extend({}, jQuery.ajaxSettings, options);
            var s = jQuery.extend(true, {}, jQuery.extend(true, {},
                            jQuery.ajaxSettings), opts);

            var id = 'jqFormIO' + (new Date().getTime());
            var jQueryio = jQuery('<iframe id="' + id + '" name="' + id
                    + '" src="' + opts.iframeSrc + '" />');
            var io = jQueryio[0];

            jQueryio.css({
                        position : 'absolute',
                        top : '-1000px',
                        left : '-1000px'
                    });

            var xhr = { // mock object
                aborted : 0,
                responseText : null,
                responseXML : null,
                status : 0,
                statusText : 'n/a',
                getAllResponseHeaders : function() {
                },
                getResponseHeader : function() {
                },
                setRequestHeader : function() {
                },
                abort : function() {
                    this.aborted = 1;
                    jQueryio.attr('src', opts.iframeSrc); // abort op in
                    // progress
                }
            };

            var g = opts.global;
            // trigger ajax global events so that activity/block indicators work
            // like normal
            if (g && !jQuery.active++)
                jQuery.event.trigger("ajaxStart");
            if (g)
                jQuery.event.trigger("ajaxSend", [xhr, opts]);

            if (s.beforeSend && s.beforeSend(xhr, s) === false) {
                s.global && jQuery.active--;
                return;
            }
            if (xhr.aborted)
                return;

            var cbInvoked = 0;
            var timedOut = 0;

            // add submitting element to data if we know it
            var sub = form.clk;
            if (sub) {
                var n = sub.name;
                if (n && !sub.disabled) {
                    options.extraData = options.extraData || {};
                    options.extraData[n] = sub.value;
                    if (sub.type == "image") {
                        options.extraData[name + '.x'] = form.clk_x;
                        options.extraData[name + '.y'] = form.clk_y;
                    }
                }
            }

            // take a breath so that pending repaints get some cpu time before
            // the upload starts
            setTimeout(function() {
                        // make sure form attrs are set
                        var t = jQueryform.attr('target'), a = jQueryform
                                .attr('action');

                        // update form attrs in IE friendly way
                        form.setAttribute('target', id);
                        if (form.getAttribute('method') != 'POST')
                            form.setAttribute('method', 'POST');
                        if (form.getAttribute('action') != opts.url)
                            form.setAttribute('action', opts.url);

                        // ie borks in some cases when setting encoding
                        if (!options.skipEncodingOverride) {
                            jQueryform.attr({
                                        encoding : 'multipart/form-data',
                                        enctype : 'multipart/form-data'
                                    });
                        }

                        // support timout
                        if (opts.timeout)
                            setTimeout(function() {
                                        timedOut = true;
                                        cb();
                                    }, opts.timeout);

                        // add "extra" data to form if provided in options
                        var extraInputs = [];
                        try {
                            if (options.extraData)
                                for (var n in options.extraData)
                                    extraInputs
                                            .push(jQuery('<input type="hidden" name="'
                                                    + n
                                                    + '" value="'
                                                    + options.extraData[n]
                                                    + '" />').appendTo(form)[0]);

                            // add iframe to doc and submit the form
                            jQueryio.appendTo('body');
                            io.attachEvent ? io.attachEvent('onload', cb) : io
                                    .addEventListener('load', cb, false);
                            form.submit();
                        } finally {
                            // reset attrs and remove "extra" input elements
                            form.setAttribute('action', a);
                            t ? form.setAttribute('target', t) : jQueryform
                                    .removeAttr('target');
                            jQuery(extraInputs).remove();
                        }
                    }, 10);

            var domCheckCount = 50;

            function cb() {
                if (cbInvoked++)
                    return;

                io.detachEvent ? io.detachEvent('onload', cb) : io
                        .removeEventListener('load', cb, false);

                var ok = true;
                try {
                    if (timedOut)
                        throw 'timeout';
                    // extract the server response from the iframe
                    var data, doc;

                    doc = io.contentWindow
                            ? io.contentWindow.document
                            : io.contentDocument
                                    ? io.contentDocument
                                    : io.document;

                    var isXml = opts.dataType == 'xml' || doc.XMLDocument
                            || jQuery.isXMLDoc(doc);
                    log('isXml=' + isXml);
                    if (!isXml
                            && (doc.body == null || doc.body.innerHTML == '')) {
                        if (--domCheckCount) {
                            // in some browsers (Opera) the iframe DOM is not
                            // always traversable when
                            // the onload callback fires, so we loop a bit to
                            // accommodate
                            cbInvoked = 0;
                            setTimeout(cb, 100);
                            return;
                        }
                        log('Could not access iframe DOM after 50 tries.');
                        return;
                    }

                    xhr.responseText = doc.body ? doc.body.innerHTML : null;
                    xhr.responseXML = doc.XMLDocument ? doc.XMLDocument : doc;
                    xhr.getResponseHeader = function(header) {
                        var headers = {
                            'content-type' : opts.dataType
                        };
                        return headers[header];
                    };

                    if (opts.dataType == 'json' || opts.dataType == 'script') {
                        // see if user embedded response in textarea
                        var ta = doc.getElementsByTagName('textarea')[0];
                        if (ta)
                            xhr.responseText = ta.value;
                        else {
                            // account for browsers injecting pre around json
                            // response
                            var pre = doc.getElementsByTagName('pre')[0];
                            if (pre)
                                xhr.responseText = pre.innerHTML;
                        }
                    } else if (opts.dataType == 'xml' && !xhr.responseXML
                            && xhr.responseText != null) {
                        xhr.responseXML = toXml(xhr.responseText);
                    }
                    data = jQuery.httpData(xhr, opts.dataType);
                } catch (e) {
                    ok = false;
                    jQuery.handleError(opts, xhr, 'error', e);
                }

                // ordering of these callbacks/triggers is odd, but that's how
                // jQuery.ajax does it
                if (ok) {
                    opts.success(data, 'success');
                    if (g)
                        jQuery.event.trigger("ajaxSuccess", [xhr, opts]);
                }
                if (g)
                    jQuery.event.trigger("ajaxComplete", [xhr, opts]);
                if (g && !--jQuery.active)
                    jQuery.event.trigger("ajaxStop");
                if (opts.complete)
                    opts.complete(xhr, ok ? 'success' : 'error');

                // clean up
                setTimeout(function() {
                            jQueryio.remove();
                            xhr.responseXML = null;
                        }, 100);
            };

            function toXml(s, doc) {
                if (window.ActiveXObject) {
                    doc = new ActiveXObject('Microsoft.XMLDOM');
                    doc.async = 'false';
                    doc.loadXML(s);
                } else
                    doc = (new DOMParser()).parseFromString(s, 'text/xml');
                return (doc && doc.documentElement && doc.documentElement.tagName != 'parsererror')
                        ? doc
                        : null;
            };
        };
    };

    /**
     * ajaxForm() provides a mechanism for fully automating form submission.
     * 
     * The advantages of using this method instead of ajaxSubmit() are:
     * 
     * 1: This method will include coordinates for <input type="image" />
     * elements (if the element is used to submit the form). 2. This method will
     * include the submit element's name/value data (for the element that was
     * used to submit the form). 3. This method binds the submit() method to the
     * form for you.
     * 
     * The options argument for ajaxForm works exactly as it does for
     * ajaxSubmit. ajaxForm merely passes the options argument along after
     * properly binding events for submit elements and the form itself.
     */
    jQuery.fn.ajaxForm = function(options) {
        return this.ajaxFormUnbind().bind('submit.form-plugin', function() {
                    jQuery(this).ajaxSubmit(options);
                    return false;
                }).bind('click.form-plugin', function(e) {
                    var target = e.target;
                    var jQueryel = jQuery(target);
                    if (!(jQueryel.is(":submit,input:image"))) {
                        // is this a child element of the submit el? (ex: a span
                        // within a button)
                        var t = jQueryel.closest(':submit');
                        if (t.length == 0)
                            return;
                        target = t[0];
                    }
                    var form = this;
                    form.clk = target;
                    if (target.type == 'image') {
                        if (e.offsetX != undefined) {
                            form.clk_x = e.offsetX;
                            form.clk_y = e.offsetY;
                        } else if (typeof jQuery.fn.offset == 'function') { // try
                            // to
                            // use
                            // dimensions
                            // plugin
                            var offset = jQueryel.offset();
                            form.clk_x = e.pageX - offset.left;
                            form.clk_y = e.pageY - offset.top;
                        } else {
                            form.clk_x = e.pageX - target.offsetLeft;
                            form.clk_y = e.pageY - target.offsetTop;
                        }
                    }
                    // clear form vars
                    setTimeout(function() {
                                form.clk = form.clk_x = form.clk_y = null;
                            }, 100);
                });
    };

    // ajaxFormUnbind unbinds the event handlers that were bound by ajaxForm
    jQuery.fn.ajaxFormUnbind = function() {
        return this.unbind('submit.form-plugin click.form-plugin');
    };

    /**
     * formToArray() gathers form element data into an array of objects that can
     * be passed to any of the following ajax functions: jQuery.get,
     * jQuery.post, or load. Each object in the array has both a 'name' and
     * 'value' property. An example of an array for a simple login form might
     * be: [ { name: 'username', value: 'jresig' }, { name: 'password', value:
     * 'secret' } ]
     * 
     * It is this array that is passed to pre-submit callback functions provided
     * to the ajaxSubmit() and ajaxForm() methods.
     */
    jQuery.fn.formToArray = function(semantic) {
        var a = [];
        if (this.length == 0)
            return a;

        var form = this[0];
        var els = semantic ? form.getElementsByTagName('*') : form.elements;
        if (!els)
            return a;
        for (var i = 0, max = els.length; i < max; i++) {
            var el = els[i];
            var n = el.name;
            if (!n)
                continue;

            if (semantic && form.clk && el.type == "image") {
                // handle image inputs on the fly when semantic == true
                if (!el.disabled && form.clk == el) {
                    a.push({
                                name : n,
                                value : jQuery(el).val()
                            });
                    a.push({
                                name : n + '.x',
                                value : form.clk_x
                            }, {
                                name : n + '.y',
                                value : form.clk_y
                            });
                }
                continue;
            }

            var v = jQuery.fieldValue(el, true);
            if (v && v.constructor == Array) {
                for (var j = 0, jmax = v.length; j < jmax; j++)
                    a.push({
                                name : n,
                                value : v[j]
                            });
            } else if (v !== null && typeof v != 'undefined')
                a.push({
                            name : n,
                            value : v
                        });
        }

        if (!semantic && form.clk) {
            // input type=='image' are not found in elements array! handle it
            // here
            var jQueryinput = jQuery(form.clk), input = jQueryinput[0], n = input.name;
            if (n && !input.disabled && input.type == 'image') {
                a.push({
                            name : n,
                            value : jQueryinput.val()
                        });
                a.push({
                            name : n + '.x',
                            value : form.clk_x
                        }, {
                            name : n + '.y',
                            value : form.clk_y
                        });
            }
        }
        return a;
    };

    /**
     * Serializes form data into a 'submittable' string. This method will return
     * a string in the format: name1=value1&amp;name2=value2
     */
    jQuery.fn.formSerialize = function(semantic) {
        // hand off to jQuery.param for proper encoding
        return jQuery.param(this.formToArray(semantic));
    };

    /**
     * Serializes all field elements in the jQuery object into a query string.
     * This method will return a string in the format:
     * name1=value1&amp;name2=value2
     */
    jQuery.fn.fieldSerialize = function(successful) {
        var a = [];
        this.each(function() {
                    var n = this.name;
                    if (!n)
                        return;
                    var v = jQuery.fieldValue(this, successful);
                    if (v && v.constructor == Array) {
                        for (var i = 0, max = v.length; i < max; i++)
                            a.push({
                                        name : n,
                                        value : v[i]
                                    });
                    } else if (v !== null && typeof v != 'undefined')
                        a.push({
                                    name : this.name,
                                    value : v
                                });
                });
        // hand off to jQuery.param for proper encoding
        return jQuery.param(a);
    };

    /**
     * Returns the value(s) of the element in the matched set. For example,
     * consider the following form:
     * 
     * <form><fieldset> <input name="A" type="text" /> <input name="A"
     * type="text" /> <input name="B" type="checkbox" value="B1" /> <input
     * name="B" type="checkbox" value="B2"/> <input name="C" type="radio"
     * value="C1" /> <input name="C" type="radio" value="C2" /> </fieldset></form>
     * 
     * var v = jQuery(':text').fieldValue(); // if no values are entered into
     * the text inputs v == ['',''] // if values entered into the text inputs
     * are 'foo' and 'bar' v == ['foo','bar']
     * 
     * var v = jQuery(':checkbox').fieldValue(); // if neither checkbox is
     * checked v === undefined // if both checkboxes are checked v == ['B1',
     * 'B2']
     * 
     * var v = jQuery(':radio').fieldValue(); // if neither radio is checked v
     * === undefined // if first radio is checked v == ['C1']
     * 
     * The successful argument controls whether or not the field element must be
     * 'successful' (per
     * http://www.w3.org/TR/html4/interact/forms.html#successful-controls). The
     * default value of the successful argument is true. If this value is false
     * the value(s) for each element is returned.
     * 
     * Note: This method *always* returns an array. If no valid value can be
     * determined the array will be empty, otherwise it will contain one or more
     * values.
     */
    jQuery.fn.fieldValue = function(successful) {
        for (var val = [], i = 0, max = this.length; i < max; i++) {
            var el = this[i];
            var v = jQuery.fieldValue(el, successful);
            if (v === null || typeof v == 'undefined'
                    || (v.constructor == Array && !v.length))
                continue;
            v.constructor == Array ? jQuery.merge(val, v) : val.push(v);
        }
        return val;
    };

    /**
     * Returns the value of the field element.
     */
    jQuery.fieldValue = function(el, successful) {
        var n = el.name, t = el.type, tag = el.tagName.toLowerCase();
        if (typeof successful == 'undefined')
            successful = true;

        if (successful
                && (!n || el.disabled || t == 'reset' || t == 'button'
                        || (t == 'checkbox' || t == 'radio') && !el.checked
                        || (t == 'submit' || t == 'image') && el.form
                        && el.form.clk != el || tag == 'select'
                        && el.selectedIndex == -1))
            return null;

        if (tag == 'select') {
            var index = el.selectedIndex;
            if (index < 0)
                return null;
            var a = [], ops = el.options;
            var one = (t == 'select-one');
            var max = (one ? index + 1 : ops.length);
            for (var i = (one ? index : 0); i < max; i++) {
                var op = ops[i];
                if (op.selected) {
                    var v = op.value;
                    if (!v) // extra pain for IE...
                        v = (op.attributes && op.attributes['value'] && !(op.attributes['value'].specified))
                                ? op.text
                                : op.value;
                    if (one)
                        return v;
                    a.push(v);
                }
            }
            return a;
        }
        return el.value;
    };

    /**
     * Clears the form data. Takes the following actions on the form's input
     * fields: - input text fields will have their 'value' property set to the
     * empty string - select elements will have their 'selectedIndex' property
     * set to -1 - checkbox and radio inputs will have their 'checked' property
     * set to false - inputs of type submit, button, reset, and hidden will
     * *not* be effected - button elements will *not* be effected
     */
    jQuery.fn.clearForm = function() {
        return this.each(function() {
                    jQuery('input,select,textarea', this).clearFields();
                });
    };

    /**
     * Clears the selected form elements.
     */
    jQuery.fn.clearFields = jQuery.fn.clearInputs = function() {
        return this.each(function() {
                    var t = this.type, tag = this.tagName.toLowerCase();
                    if (t == 'text' || t == 'password' || tag == 'textarea')
                        this.value = '';
                    else if (t == 'checkbox' || t == 'radio')
                        this.checked = false;
                    else if (tag == 'select')
                        this.selectedIndex = -1;
                });
    };

    /**
     * Resets the form data. Causes all form elements to be reset to their
     * original value.
     */
    jQuery.fn.resetForm = function() {
        return this.each(function() {
                    // guard against an input with the name of 'reset'
                    // note that IE reports the reset function as an 'object'
                    if (typeof this.reset == 'function'
                            || (typeof this.reset == 'object' && !this.reset.nodeType))
                        this.reset();
                });
    };

    /**
     * Enables or disables any matching elements.
     */
    jQuery.fn.enable = function(b) {
        if (b == undefined)
            b = true;
        return this.each(function() {
                    this.disabled = !b;
                });
    };

    /**
     * Checks/unchecks any matching checkboxes or radio buttons and
     * selects/deselects and matching option elements.
     */
    jQuery.fn.selected = function(select) {
        if (select == undefined)
            select = true;
        return this.each(function() {
            var t = this.type;
            if (t == 'checkbox' || t == 'radio')
                this.checked = select;
            else if (this.tagName.toLowerCase() == 'option') {
                var jQuerysel = jQuery(this).parent('select');
                if (select && jQuerysel[0] && jQuerysel[0].type == 'select-one') {
                    // deselect all other options
                    jQuerysel.find('option').selected(false);
                }
                this.selected = select;
            }
        });
    };

    // helper fn for console logging
    // set jQuery.fn.ajaxSubmit.debug to true to enable debug logging
    function log() {
        if (jQuery.fn.ajaxSubmit.debug && window.console && window.console.log)
            window.console.log('[jquery.form] '
                    + Array.prototype.join.call(arguments, ''));
    };

})(jQuery);
